diff options
| author | Nicolas Ferre <nicolas.ferre@microchip.com> | 2019-09-11 09:41:53 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-04 15:16:53 +0300 |
| commit | a3bf4d6816556baa9a503c9232eb7e3f018ff8dc (patch) | |
| tree | 2dbf94f32fae126f77b0ff015d81b2d4e21639e9 /drivers/usb | |
| parent | 9c4567fa0a44e3733f49f93a2197d9907b836d4a (diff) | |
| download | linux-a3bf4d6816556baa9a503c9232eb7e3f018ff8dc.tar.xz | |
USB: host: ohci-at91: suspend: delay needed before to stop clocks
In order to completely remove marginal power consumption in PM suspend,
we need to let the controller settle down before being stopped.
In ohci_hcd_at91_drv_suspend() function, one additional delay is needed before
to stop the clocks.
Reported-by: Boris Krasnovskiy <Boris.Krasnovskiy@lairdconnect.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20190911064154.28633-3-nicolas.ferre@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/ohci-at91.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index cb63bcd5049a..85d67fe42d59 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -628,6 +628,7 @@ ohci_hcd_at91_drv_suspend(struct device *dev) /* flush the writes */ (void) ohci_readl (ohci, &ohci->regs->control); + msleep(1); at91_stop_clock(ohci_at91); } |